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Details

Updated php packages that fix one security issue are now available for RedHat Enterprise Linux 3 and 4 Extended Life Cycle Support.

The Red Hat Security Response Team has rated this update as having criticalsecurity impact. A Common Vulnerability Scoring System (CVSS) base score,which gives a detailed severity rating, is available from the CVE link inthe References section.

PHP is an HTML-embedded scripting language commonly used with the ApacheHTTP Server.

A memory corruption flaw was found in the way the openssl_x509_parse()function of the PHP openssl extension parsed X.509 certificates. A remoteattacker could use this flaw to provide a malicious self-signed certificateor a certificate signed by a trusted authority to a PHP application usingthe aforementioned function, causing the application to crash or, possibly,allow the attacker to execute arbitrary code with the privileges of theuser running the PHP interpreter. (CVE-2013-6420)

Red Hat would like to thank the PHP project for reporting this issue.Upstream acknowledges Stefan Esser as the original reporter of this issue.

All php users are advised to upgrade to these updated packages, whichcontain a backported patch to correct this issue. After installing theupdated packages, the httpd daemon must be restarted for the update totake effect.

Solution

Before applying this update, make sure all previously released erratarelevant to your system have been applied.